Improper Verification of Cryptographic Signature in Enigmail - CVE-2017-17847

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Main Vulnerability Database Vulnerabilities #VU31379

Improper Verification of Cryptographic Signature in Enigmail - CVE-2017-17847

Published: December 27, 2017 / Updated: July 17, 2020


Vulnerability identifier: #VU31379
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-17847
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: enigmail.mozdev.org
Affected software:
Enigmail

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

An issue was discovered in Enigmail before 1.9.9. Signature spoofing is possible because the UI does not properly distinguish between an attachment signature, and a signature that applies to the entire containing message, aka TBE-01-021. This is demonstrated by an e-mail message with an attachment that is a signed e-mail message in message/rfc822 format.


How to mitigate CVE-2017-17847

Install update from vendor's website.

Sources